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Utilize CPVC schedule 80 piping, they also use cpvc ball valves where the ball of the valve is drilled on one side to prevent gassing of the hypochlorite. I have used CPVC piping in the past which works well, also use compatible adhesives for installation of the piping.

Have a 66 inch steel discharge header at a pump station. Want to connect a 36 inch pipe perpindicular to the 66 inch. The outer edge of the 36 inch intersects a mitered welded elbow of the 66 inch discharge header. Is there a minimum clearance required by code between the two welded joints?

Does anyone know or can reference the seismic code requirements for mechanical equipment. This would involve a new york city wastewater treatment plant where the building is design to withstand seismic loads but what happens to ancillary equipment such as inlet air ductwork for a back up power...

Current wastewater treatment plants use PVC or CPVC piping to convey sodium hypochlorite at 15% solution. This is the most economical choice.

The air that is utilized from the tanker truck to transfer the polymer goes through a descicant drier that is installed on the truck. The air is pressurized by an air compressor installed on the truck. The flow rate of air from the air compressor is minimal during the liquid transfer from the...

The liquid is emulsion polymer which is highly viscous with a specific gravity of 1.06. The storage tanks are vented through a descicant drier that prevents any moisture from entering the tanks. The desicant drier is the restriction due to the pressure drop across the descicant. The polymer from...

The pumping system consists of pumping effluent water from the final effluent tanks at a wastewater treatment plant. The largest demands are spray water which I'd like to maintain at 40 psi. Some of the other demands throughout the plant include cooling water, pipe flushing(intermittent), There...

I'm trying to develop the control strategy for a booster pumping sytem. There are 4 booster pumps three operating and one standby, each pump operates at 130 TDH at 3500 gpm. the maximum flow rate for the system would be 10500 gpm. The pumps are controled by a variable frequency drives. The...

The effluent system will be utilized for spray water, cooling water, and flushing water at various locations around the plant. Actually my sytem curve shows about 50 feet of additional head at max flow 10,500 gpm with three pumps operating together. Including my static head of 60 psi(138.6 feet)...

I would like to develop a booster pump system that would maintain a system pressure of 60 psi at a municipal plant. The system will distribute effluent water at various locations. My suction header is drawing off of an effluent channel. A positive suction head of 14 feet plus atmospheric. I want...

Thanks for everyone's help. I would like to maintain a system pressure of 60 psi at the plant. The effluent water will be utilized at various locations. My suction header is drawing off of an effluent channel. A positive suction head of 14 feet plus atmospheric. I want to set up a pipe network...

The problem is not the liquid pumping but when the last drop of liquid leaves the tanker truck. Then you have a pressurized vessel of air that can displace a huge volume of air. The receiving storage tank has a desicant type of dryer on the vent thats rated for 150 cfm @ 2" water pressure.

What is typically installed on fiberglass storage tanks to prevent surges in backpressure during chemical tank loading using air loading practices for tanker trucks. These trucks utilize compressed air to transfer liquid volume from tanker to storage vessels. The fiberglass storage tanks are...

I need information on putting together a booster pump system utilizing effluent water for a municipal plant. Initially the minimum demand is about 3300 gpm. The final maximum demands are about 12000 GPM. The system needs to supply effluent water at a pressure of 60 psi. The total number of pumps...

Thanks for everyone's help, sorry I didn't get back to this sooner. Haf can you please send me the formulas or tables for choke flow. Thanks again.

Typically chemical bulk storage deliveries on a tanker truck use air to unload the contents of about 5000 gallons. The tanker trucks utilize a compressor which pressurizes the tank to 20 to 30 psi. The compressor puts out about 15 cfm. Once the tanker truck is toward the end of the unloading its...